1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2017 Oracle. All Rights Reserved.
4 * Author: Darrick J. Wong <darrick.wong@oracle.com>
8 #include "xfs_shared.h"
9 #include "xfs_format.h"
10 #include "xfs_trans_resv.h"
11 #include "xfs_mount.h"
12 #include "xfs_defer.h"
13 #include "xfs_btree.h"
15 #include "xfs_log_format.h"
16 #include "xfs_trans.h"
18 #include "xfs_alloc.h"
19 #include "xfs_rtalloc.h"
20 #include "xfs_inode.h"
21 #include "scrub/xfs_scrub.h"
22 #include "scrub/scrub.h"
23 #include "scrub/common.h"
24 #include "scrub/trace.h"
26 /* Set us up with the realtime metadata locked. */
34 error = xchk_setup_fs(sc, ip);
38 sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTBITMAP;
39 sc->ip = sc->mp->m_rbmip;
40 xfs_ilock(sc->ip, sc->ilock_flags);
45 /* Realtime bitmap. */
47 /* Scrub a free extent record from the realtime bitmap. */
51 struct xfs_rtalloc_rec *rec,
54 struct xfs_scrub *sc = priv;
55 xfs_rtblock_t startblock;
56 xfs_rtblock_t blockcount;
58 startblock = rec->ar_startext * tp->t_mountp->m_sb.sb_rextsize;
59 blockcount = rec->ar_extcount * tp->t_mountp->m_sb.sb_rextsize;
61 if (startblock + blockcount <= startblock ||
62 !xfs_verify_rtbno(sc->mp, startblock) ||
63 !xfs_verify_rtbno(sc->mp, startblock + blockcount - 1))
64 xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, 0);
68 /* Scrub the realtime bitmap. */
75 /* Invoke the fork scrubber. */
76 error = xchk_metadata_inode_forks(sc);
77 if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
80 error = xfs_rtalloc_query_all(sc->tp, xchk_rtbitmap_rec, sc);
81 if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, 0, &error))
88 /* Scrub the realtime summary. */
93 struct xfs_inode *rsumip = sc->mp->m_rsumip;
94 struct xfs_inode *old_ip = sc->ip;
95 uint old_ilock_flags = sc->ilock_flags;
99 * We ILOCK'd the rt bitmap ip in the setup routine, now lock the
100 * rt summary ip in compliance with the rt inode locking rules.
102 * Since we switch sc->ip to rsumip we have to save the old ilock
103 * flags so that we don't mix up the inode state that @sc tracks.
106 sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTSUM;
107 xfs_ilock(sc->ip, sc->ilock_flags);
109 /* Invoke the fork scrubber. */
110 error = xchk_metadata_inode_forks(sc);
111 if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
114 /* XXX: implement this some day */
115 xchk_set_incomplete(sc);
117 /* Switch back to the rtbitmap inode and lock flags. */
118 xfs_iunlock(sc->ip, sc->ilock_flags);
119 sc->ilock_flags = old_ilock_flags;
125 /* xref check that the extent is not free in the rtbitmap */
127 xchk_xref_is_used_rt_space(
128 struct xfs_scrub *sc,
132 xfs_rtblock_t startext;
133 xfs_rtblock_t endext;
134 xfs_rtblock_t extcount;
138 if (xchk_skip_xref(sc->sm))
142 endext = fsbno + len - 1;
143 do_div(startext, sc->mp->m_sb.sb_rextsize);
144 if (do_div(endext, sc->mp->m_sb.sb_rextsize))
146 extcount = endext - startext;
147 xfs_ilock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);
148 error = xfs_rtalloc_extent_is_free(sc->mp, sc->tp, startext, extcount,
150 if (!xchk_should_check_xref(sc, &error, NULL))
153 xchk_ino_xref_set_corrupt(sc, sc->mp->m_rbmip->i_ino);
155 xfs_iunlock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);